Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
  • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
  • C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
  • A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
  • A61P17/14—Drugs for dermatological disorders for baldness or alopecia
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P27/00—Drugs for disorders of the senses
  • A61P27/02—Ophthalmic agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P27/00—Drugs for disorders of the senses
  • A61P27/02—Ophthalmic agents
  • A61P27/06—Antiglaucoma agents or miotics
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
  • C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
  • C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
  • C07D207/22—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D207/24—Oxygen or sulfur atoms
  • C07D207/26—2-Pyrrolidones
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
  • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
  • C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links

Definitions

• Ocular hypotensive agents are useful in the treatment of a number of various ocular hypertensive conditions, such as post-surgical and post-laser trabeculectomy ocular hypertensive episodes, glaucoma, and as presurgical adjuncts.
• Glaucoma is a disease of the eye characterized by increased intraocular pressure. On the basis of its etiology, glaucoma has been classified as primary or secondary. For example, primary glaucoma in adults (congenital glaucoma) may be either open-angle or acute or chronic angle-closure. Secondary glaucoma results from pre-existing ocular diseases such as uveitis, intraocular tumor or an enlarged cataract.
• the underlying causes of primary glaucoma are not yet known.
• the increased intraocular tension is due to the obstruction of aqueous humor outflow.
• chronic open-angle glaucoma the anterior chamber and its anatomic structures appear normal, but drainage of the aqueous humor is impeded.
• acute or chronic angle-closure glaucoma the anterior chamber is shallow, the filtration angle is narrowed, and the iris may obstruct the trabecular meshwork at the entrance of the canal of Schlemm. Dilation of the pupil may push the root of the iris forward against the angle, and may produce pupilary block and thus precipitate an acute attack. Eyes with narrow anterior chamber angles are predisposed to acute angle-closure glaucoma attacks of various degrees of severity.
• Secondary glaucoma is caused by any interference with the flow of aqueous humor from the posterior chamber into the anterior chamber and subsequently, into the canal of Schlemm.
• Inflammatory disease of the anterior segment may prevent aqueous escape by causing complete posterior synechia in iris bombe, and may plug the drainage channel with exudates.
• Other common causes are intraocular tumors, enlarged cataracts, central retinal vein occlusion, trauma to the eye, operative procedures and intraocular hemorrhage.
• glaucoma occurs in about 2% of all persons over the age of 40 and may be asymptotic for years before progressing to rapid loss of vision.
• topical ⁇ -adrenoreceptor antagonists have traditionally been the drugs of choice for treating glaucoma.
• Eicosanoids and their derivatives are currently commercially available for use in glaucoma management.
• Eicosanoids and derivatives include numerous biologically important compounds such as prostaglandins and their derivatives.
• Prostaglandins can be described as derivatives of prostanoic acid which have the following structural formula:
• prostaglandins are known, depending on the structure and substituents carried on the alicyclic ring of the prostanoic acid skeleton. Further classification is based on the number of unsaturated bonds in the side chain indicated by numerical subscripts after the generic type of prostaglandin [e.g. prostaglandin E 1 (PGE 1 ), prostaglandin E 2 (PGE 2 )], and on the configuration of the substituents on the alicyclic ring indicated by ⁇ or ⁇ [e.g. prostaglandin F 2 ⁇ (PGF 2 ⁇ )].
• PGE 1 prostaglandin E 1
• PGE 2 prostaglandin E 2
• PPF 2 ⁇ prostaglandin F 2 ⁇
• Prostaglandin EP 2 selective agonists are believed to have several medical uses.
• U.S. Pat. No. 6,437,146 teaches the use of prostaglandin EP 2 selective agonists “for treating or preventing inflammation and pain in joint and muscle (e.g., rheumatoid arthritis, rheumatoid spondylitis, osteoarthritis, gouty arthritis, juvenile arthritis, etc.), inflammatory skin condition (e.g., sunburn, burns, eczema, dermatitis, etc.), inflammatory eye condition (e.g., conjunctivitis, etc.), lung disorder in which inflammation is involved (e.g., asthma, bronchitis, pigeon fancier's disease, farmer's lung, etc.), condition of the gastrointestinal tract associated with inflammation (e.g., aphthous ulcer, Chrohn's disease, atrophic gastritis, gastritis varialoforme, ulcerative colitis, coelia
• U.S. Pat. No. 6,710,072 teaches the use of EP2 agonists for the treatment or prevention of “osteoporosis, constipation, renal disorders, sexual dysfunction, baldness, diabetes, cancer and in disorder of immune regulation . . . various pathophysiological diseases including acute myocardial infarction, vascular thrombosis, hypertension, pulmonary hypertension, ischemic heart disease, congestive heart failure, and angina pectoris.”
• Disclosed herein are compounds useful in treating glaucoma, inflammatory bowel disease, the stimulation of hair growth, and the stimulation of the conversion of vellus hair to terminal hair.
• the compounds themselves are disclosed below.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• Use of this compound in the treatment and/or prevention, and/or in the manufacture of a medicament for the treatment and/or prevention, of any disease and/or condition mentioned herein as related to prostaglandin EP2 activity is also contemplated.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• said compound, salt thereof, and/or prodrug thereof is used to treat and/or prevent glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment and/or prevention of glaucoma and/or ocular hypertension in a mammal.
• said compound, and/or salt thereof, and/or prodrug thereof is used in the manufacture of a medicament for the treatment of baldness in a mammal.
• Another embodiment is a composition comprising said compound, and/or salt thereof, and/or prodrug thereof, wherein said composition is ophthalmically acceptable.
• the compounds disclosed herein are useful for the prevention or treatment of glaucoma or ocular hypertension in mammals, or for the manufacture of a medicament for the treatment of glaucoma or ocular hypertension. They are also useful for the treatment of those diseases disclosed in the art as being amenable to treatment by prostaglandin EP 2 agonist, such as the ones listed previously.
• a “pharmaceutically acceptable salt” is any salt that retains the activity of the parent compound and does not impart any additional deleterious or untoward effects on the subject to which it is administered and in the context in which it is administered compared to the parent compound.
• a pharmaceutically acceptable salt also refers to any salt which may form in vivo as a result of administration of an acid, another salt, or a prodrug which is converted into an acid or salt.
• Pharmaceutically acceptable salts of acidic functional groups may be derived from organic or inorganic bases.
• the salt may comprise a mono or polyvalent ion.
• the inorganic ions lithium, sodium, potassium, calcium, and magnesium.
• Organic salts may be made with amines, particularly ammonium salts such as mono-, di- and trialkyl amines or ethanol amines. Salts may also be formed with caffeine, tromethamine and similar molecules.
• Hydrochloric acid or some other pharmaceutically acceptable acid may form a salt with a compound that includes a basic group, such as an amine or a pyridine ring.
• a “prodrug” is a compound which is converted to a therapeutically active compound after administration, and the term should be interpreted as broadly herein as is generally understood in the art. While not intending to limit the scope of the invention, conversion may occur by hydrolysis of an ester group or some other biologically labile group. Generally, but not necessarily, a prodrug is inactive or less active than the therapeutically active compound to which it is converted. Ester prodrugs of the compounds disclosed herein are specifically contemplated. An ester may be derived from a carboxylic acid of C1 (i.e.
• an ester may be derived from a carboxylic acid functional group on another part of the molecule, such as on a phenyl ring. While not intending to be limiting, an ester may be an alkyl ester, an aryl ester, or a heteroaryl ester.
• alkyl has the meaning generally understood by those skilled in the art and refers to linear, branched, or cyclic alkyl moieties.
• C 1-6 alkyl esters are particularly useful, where alkyl part of the ester has from 1 to 6 carbon atoms and includes, but is not limited to, methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, iso-butyl, t-butyl, pentyl isomers, hexyl isomers, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and combinations thereof having from 1-6 carbon atoms, etc.
• a metabolite is broadly defined as a compound which is formed in vivo from the disclosed compound.
• a drug to be administered systemically it may be confected as a powder, pill, tablet or the like, or as a solution, emulsion, suspension, aerosol, syrup or elixir suitable for oral or parenteral administration or inhalation.
• non-toxic solid carriers include, but are not limited to, pharmaceutical grades of mannitol, lactose, starch, magnesium stearate, sodium saccharin, the polyalkylene glycols, talcum, cellulose, glucose, sucrose and magnesium carbonate.
• the solid dosage forms may be uncoated or they may be coated by known techniques to delay disintegration and absorption in the gastrointestinal tract and thereby provide a sustained action over a longer period.
• a time delay material such as glyceryl monostearate or glyceryl distcarate may be employed. They may also be coated by the technique described in the U.S. Pat. Nos.
• Liquid pharmaceutically administrable dosage forms can, for example, comprise a solution or suspension of one or more of the presently useful compounds and optional pharmaceutical adjutants in a carrier, such as for example, water, saline, aqueous dextrose, glycerol, ethanol and the like, to thereby form a solution or suspension.
• a carrier such as for example, water, saline, aqueous dextrose, glycerol, ethanol and the like, to thereby form a solution or suspension.
• the pharmaceutical composition to be administered may also contain minor amounts of nontoxic auxiliary substances such as wetting or emulsifying agents, pH buffering agents and the like.
• auxiliary agents are sodium acetate, sorbitan monolaurate, triethanolamine, sodium acetate, triethanolamine oleate, etc.
• Actual methods of preparing such dosage forms are known, or will be apparent, to those skilled in this art; for example, see Remington's Pharmaceutical Sciences, Mack Publishing Company, Easton, Pa., 16th Edition, 1980.
• the composition of the formulation to be administered, in any event contains a quantity of one or more of the presently useful compounds in an amount effective to provide the desired therapeutic effect.
• Parenteral administration is generally characterized by injection, either subcutaneously, intramuscularly or intravenously.
• Injectables can be prepared in conventional forms, either as liquid solutions or suspensions, solid forms suitable for solution or suspension in liquid prior to injection, or as emulsions. Suitable excipients are, for example, water, saline, dextrose, glycerol, ethanol and the like.
• the injectable pharmaceutical compositions to be administered may also contain minor amounts of non-toxic auxiliary substances such as wetting or emulsifying agents, pH buffering agents and the like.
• the amount of the presently useful compound or compounds administered is, of course, dependent on the therapeutic effect or effects desired, on the specific mammal being treated, on the severity and nature of the mammal's condition, on the manner of administration, on the potency and pharmacodynamics of the particular compound or compounds employed, and on the judgment of the prescribing physician.
• the therapeutically effective dosage of the presently useful compound or compounds is preferably in the range of about 0.5 or about 1 to about 100 mg/kg/day.
• a liquid which is ophthalmically acceptable is formulated such that it can be administered topically to the eye.
• the comfort should be maximized as much as possible, although sometimes formulation considerations (e.g. drug stability) may necessitate less than optimal comfort.
• the liquid should be formulated such that the liquid is tolerable to the patient for topical ophthalmic use.
• an ophthalmically acceptable liquid should either be packaged for single use, or contain a preservative to prevent contamination over multiple uses.
• solutions or medicaments are often prepared using a physiological saline solution as a major vehicle.
• Ophthalmic solutions should preferably be maintained at a comfortable pH with an appropriate buffer system.
• the formulations may also contain conventional, pharmaceutically acceptable preservatives, stabilizers and surfactants.
• Preservatives that may be used in the pharmaceutical compositions of the present invention include, but are not limited to, benzalkonium chloride, chlorobutanol, thimerosal, phenylmercuric acetate and phenylmercuric nitrate.
• a useful surfactant is, for example, Tween 80.
• various useful vehicles may be used in the ophthalmic preparations of the present invention. These vehicles include, but are not limited to, polyvinyl alcohol, povidone, hydroxypropyl methyl cellulose, poloxamers, carboxymethyl cellulose, hydroxyethyl cellulose and purified water.
• Tonicity adjustors may be added as needed or convenient. They include, but are not limited to, salts, particularly sodium chloride, potassium chloride, mannitol and glycerin, or any other suitable ophthalmically acceptable tonicity adjustor.
• buffers include acetate buffers, citrate buffers, phosphate buffers and borate buffers. Acids or bases may be used to adjust the pH of these formulations as needed.
• an ophthalmically acceptable antioxidant for use in the present invention includes, but is not limited to, sodium metabisulfite, sodium thiosulfate, acetylcysteine, butylated hydroxyanisole and butylated hydroxytoluene.
• excipient components which may be included in the ophthalmic preparations are chelating agents.
• a useful chelating agent is edetate disodium, although other chelating agents may also be used in place or in conjunction with it.
• the ingredients are usually used in the following amounts:
• Ingredient Amount (% w/v) active ingredient about 0.001-5 preservative 0-0.10 vehicle 0-40 tonicity adjustor 1-10 buffer 0.01-10 pH adjustor q.s. pH 4.5-7.5 antioxidant as needed surfactant as needed purified water as needed to make 100% Applications for Stimulating Hair Growth
• the compounds disclosed herein can be useful in the treatment of baldness and/or hair loss.
• Alopecia baldness
• baldness is a deficiency of either normal or abnormal hair, and is primarily a cosmetic problem in humans. It is a deficiency of terminal hair, the broad diameter, colored hair that is readily seen.
• vellus hair is a fine colorless hair which may require microscopic examination to determine its presence. This vellus hair is a precursor to terminal hair.
• the compounds described herein can be used to stimulate, such as the conversion of vellus hair to growth as terminal hair, as well as increasing the rate of growth of terminal hair.
• the utility of the compounds described herein for the simulation of hair growth was discovered as follows.
• the compounds described herein are prostaglandin analogues and therefore have similar activities as bimatoprost, contain structural similarities, and therefore are expected to stimulate hair growth and stimulation of the conversion of vellus hair to terminal hair.
• the compounds described herein and their prodrugs can be used for the stimulation of hair growth.
• hair growth includes hair associated with the scalp, eyebrows, eyelids, beard, and other areas of the skin of animals.
• the compound is mixed with a dermatologically compatible vehicle or carrier.
• vehicle which may be employed for preparing compositions as described herein, may comprise, for example, aqueous solutions such as e.g., physiological salines, oil solutions, or ointments.
• vehicle furthermore may contain dermatologically compatible preservatives such as e.g., benzalkonium chloride, surfactants like e.g., polysorbate 80, liposomes or polymers, for example, methyl cellulose, polyvinyl alcohol, polyvinyl pyrrolidone and hyaluronic acid; these may be used for increasing the viscosity.
• soluble or insoluble drug inserts when the drug is to be administered.
• dermatological compositions can be formulated for topical treatment for the stimulation of hair growth which comprises an effective hair growth simulating amount of one or more compounds as defined above and a dermatologically compatible carrier.
• Effective amounts of the active compounds may be determined by one of ordinary skill in the art, but will vary depending on the compound employed, frequency of application and desired result.
• the compound will generally range from about 0.0000001 to about 50% by weight of the dermatological composition.
• the compound will range from about 0.001 to about 50% by weight of total dermatological composition, more preferably from about 0.1 to about 30% by weight of the composition.
• the application of the present compounds for stimulation of hair growth finds applications in mammalian species, including both humans and animals.
• the compounds described herein can be applied for example, to the scalp, face beard, head, pubic area, upper lip, eyebrows, and eyelids.
• animal raised for their pelts, e.g., mink the compounds described herein can be applied over the entire surface of the body to improve the overall pelt for commercial reasons.
• the process can also be used for cosmetic reasons in animals, e.g., applied to the skin of dogs and cats having bald patches due to mange or other diseases causing a degree of alopecia.
• compositions contemplated for the stimulation of hair growth include pharmaceutical compositions suited for topical and local action.
• topical as employed herein relates to the use of a compound, as described herein, incorporated in a suitable pharmaceutical carrier, and applied at the site of thinning hair or baldness for exertion of local action.
• topical compositions include those pharmaceutical forms in which the compound is applied externally by direct contact with the skin to be treated.
• Conventional pharmaceutical forms for this purpose include ointments, liniments, creams, shampoos, lotions, pastes, jellies, sprays, aerosols, and the like, and may be applied in patches or impregnated dressings depending on the part of the body to be treated.
• cream embraces formulations (including creams) having oleaginous, water-soluble and emulsion-type bases, e.g., petrolatum, lanolin, polyethylene glycols, as well as mixtures of these.
• oleaginous, water-soluble and emulsion-type bases e.g., petrolatum, lanolin, polyethylene glycols, as well as mixtures of these.
• the compounds can be applied repeatedly for the sustained period of time topically on the part of the body to be treated, for example, the eyelids, eyebrows, skin or scalp.
• the preferred dosage regimen will generally involve regular, such as daily, administration for a period of treatment of at least one month, more preferably at least three months, and most preferably, at least six months.
• the active compounds can be formulated in aqueous solutions, creams, ointments, or oils exhibiting physologicla acceptable osmolarity by addition of pharmaceutically acceptable buffers and salts, such formulations may or may not, depending on the dispenser, contain preservatives such as benzalkonium chloride, chlorhexidine, chlorobutanol, parahydroxybenzoic acids and phenylmercuric salts such as nitrate, chloride, acetate, and borate, or antioxidants, as well as additives like EDTA, sorbitol, boric acid and the like as additives.
• preservatives such as benzalkonium chloride, chlorhexidine, chlorobutanol, parahydroxybenzoic acids and phenylmercuric salts such as nitrate, chloride, acetate, and borate, or antioxidants, as well as additives like EDTA, sorbitol, boric acid and the like as additives.
• aqueous solutions may contain viscosity increasing agents such as polysaccharides, e.g., methylcellulose, mucopolysaccharides, e.g., hyaluronic acid and chondroitin sulfate, or poly alcohol, e.g., polyvinylalcohol.
• viscosity increasing agents such as polysaccharides, e.g., methylcellulose, mucopolysaccharides, e.g., hyaluronic acid and chondroitin sulfate, or poly alcohol, e.g., polyvinylalcohol.
• Various slow releasing gels and matricies may also be employed as well as soluble and insoluble ocular inserts, for instance, based on substances forming in situ gels.
• various amounts of the drug and different dose regimens may be employed.
• the daily amount of compound for treatment of the eyelid may be about 0.1 ng to about 100 mg per eyelid.
• the compound can be advantageously formulated using ointments, creams, liniments or patches as a carrier of the active ingredient.
• these formulations may or may not contain preservatives, depending on the dispenser and nature of use.
• preservatives include those mentioned above, and methyl-, propyl-, or butyl-parahydroxybenzoic acid, betain, chlorhexidine, benzalkonium chloride, and the like.
• matricies for the slow release delivery may also be used.
• the dose to be applied on the scalp is in the range of about 0.1 ng to about 100 mg per day, more preferably about 1 ng to about 10 mg per day, and most preferably about 10 ng to about 1 mg per day depending on the compound and the formulation.
• the compound may be administered once or several times daily with or without antioxidants.
• Topical formulations may generally be comprised of a pharmaceutical carrier, cosolvent, emulsifier, penetration enhancer, preservative system, and emollient.
• the actual dose of the active compounds of the present invention depends on the specific compound, and on the condition to be treated; the selection of the appropriate dose is well within the knowledge of the skilled artisan.
• the compounds disclosed herein are also useful in combination with other drugs useful for the treatment of glaucoma or other conditions.
• amide 1 (3.30 g, 14.4 mmol) in 1,4-dioxane (25 mL) was added to a mixture of 4,5-bis(triphenylphosphino)-9,9-dimethylxanthene (xantphos, 600 mg, 1.04 mmol), Pd 2 (dba) 3 (317 mg, 0.35 mmol) and Cs 2 CO 3 (6.46 g, 19.8 mmol).
• 1-Bromo-4-tert-butylbenzene (2.40 mL, 13.8 mmol) was added and the reaction mixture was purged with nitrogen. The mixture was heated at reflux for 19 h, then cooled to rt.
• Triethylamine and ethyl chloroformate are added sequentially to a solution of compound 4 in CH 2 Cl 2 at room temperature. After 2.5 h, triethylamine and ethylene glycol are added. After stirring overnight at room temperature, the reaction mixture is partitioned between H 2 O and CH 2 Cl 2 . The phases are separated and the aqueous phase is extracted with CH 2 Cl 2 (2 ⁇ ). The combined organic phase is washed with 1 N HCl then dried (MgSO 4 ), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (10% CH 3 OH/CH 2 Cl 2 ) affords compound 8a.
• Triethylamine and ethyl chloroformate are added sequentially to a solution of compound 4 in CH 2 Cl 2 at room temperature. After 2.5 h, triethylamine and 4-(2-hydroxyethyl)-morphine are added. After stirring overnight at room temperature, the reaction mixture is partitioned between H 2 O and CH 2 Cl 2 . The phases are separated and the aqueous phase is extracted with CH 2 Cl 2 (2 ⁇ ). The combined organic phase is washed with 1 N HCl then dried (MgSO 4 ), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (10% CH 3 OH/CH 2 Cl 2 ) affords compound 8b.
• Aqueous lithium hydroxide (1 N, 0.4 mL) was added to a solution of ester from step 1 above (33.5 mg, 0.085 mmol) in THF (0.75 mL). After 3.5 h at rt, the reaction was acidified with 0.25 M HCl (5 mL) then extracted with CH 2 Cl 2 (3 ⁇ 10 mL). Combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (2% MeOH/CH 2 Cl 2 ), followed by preparative thin layer chromatography (10% MeOH/CH 2 Cl 2 ) afforded 6.6 mg (20%) of compound 5.
• Compounds 10a and 10b are prepared from compound 6 according to Example 1, step 5.
• Compounds 11a and 11b are prepared from compound 7 according to Example 1, step 5.
• Compounds 15a and 15b are prepared from compound 14 according to Example 1, step 5.
• Pentyl magnesium bromide (2.0 M in Et 2 O, 32 L, 0.064 mmol) was added to a solution of aldehyde 21 (21.7 mg, 0.058 mmol) in THF (0.4 mL) at ⁇ 40° C. under nitrogen. After 25 min, the reaction was quenched with saturated aqueous NH 4 Cl and extracted with CH 2 Cl 2 (3 ⁇ 7 mL). Combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by preparative thin layer chromatography (5% MeOH/CH 2 Cl 2 ) afforded 10.6 mg (41%) of the desired ester.
• Compounds 25a and 25b are prepared from compound 22 according to Example 1, step 5.
• Aqueous lithium hydroxide (1 N, 0.05 mL) was added to a solution of the ester from step 1 above (3.1 mg, 0.007 mmol) in THF (0.15 mL). After 1 h at rt, the reaction was acidified with 0.2 N HCl (1 mL) then extracted with CH 2 Cl 2 (3 ⁇ 7 mL). Combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo to afford 2.5 mg (86%) of compound 23.
• Compounds 26a and 26b are prepared from compound 23 according to Example 1, step 5.
• Aqueous lithium hydroxide (1 N, 0.05 mL) was added to a solution of the ester from step 1 above (2.4 mg, 0.005 mmol) in THF (0.15 mL). After 2.5 h at rt, the reaction was acidified with 0.2 N HCl (1 mL) then extracted with CH 2 Cl 2 (3 ⁇ 7 mL). Combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo to afford 2.2 mg (98%) of compound 24.
• Compounds 27a and 27b are prepared from compound 24 according to Example 1, step 5.
• Pentyl magnesium bromide (2.0 M in Et 2 O, 22 ⁇ L, 0.044 mmol) was added to a solution of aldehyde 30 (11 mg, 0.029 mmol) in THF (0.2 mL) at ⁇ 40° C. under nitrogen. After 1.5 h, the reaction was quenched with saturated aqueous NH 4 Cl and extracted with CH 2 Cl 2 (3 ⁇ 7 mL). Combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by preparative thin layer chromatography (5% MeOH/CH 2 Cl 2 ) afforded 4.8 mg (37%) of the desired ester.
• Compounds 32a and 32b are prepared from compound 31 according to Example 1, step 5.
• Pentyl magnesium bromide (2.0 M in Et 2 O, 50 ⁇ L, 0.10 mmol) was added to a solution of aldehyde 34 (12.4 mg, 0.034 mmol) in THF (0.1 mL) at ⁇ 40° C. under nitrogen. After 1 h, the reaction was quenched with saturated aqueous NH 4 Cl (7 mL) and extracted with CH 2 Cl 2 (3 ⁇ 7 mL). Combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by preparative thin layer chromatography (5% MeOH/CH 2 Cl 2 ) afforded 8.6 mg (58%) of the desired ester.
• Compounds 36a and 36b are prepared from compound 35 according to Example 1, step 5.
• n-Butyl magnesium chloride (2.0 M in THF, 41 ⁇ L, 0.082 mmol) was added to a solution of aldehyde 30 (20.2 mg, 0.054 mmol) in THF (0.1 mL) at ⁇ 40° C. under nitrogen. After 1 h, the reaction was quenched with saturated aqueous NH 4 Cl (10 mL) and extracted with CH 2 Cl 2 (3 ⁇ 7 mL). Combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by preparative thin layer chromatography (5% MeOH/CH 2 Cl 2 ) afforded 12.3 mg (53%) of the desired ester.
• Compounds 41a and 41b are prepared from compound 37 according to Example 1, step 5.
• n-Hexyl magnesium bromide (2.0 M in Et 2 O, 100 L, 0.20 mmol) was added to a solution of aldehyde 30 (24.6 mg, 0.054 mmol) in THF (0.12 mL) at ⁇ 40° C. under nitrogen. After 1.5 h, the reaction was quenched with saturated aqueous NH 4 Cl (10 mL) and extracted with CH 2 Cl 2 (3 ⁇ 7 mL). Combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by preparative thin layer chromatography (5% MeOH/CH 2 Cl 2 ) afforded 16.3 mg (54%) of the desired ester.
• Compounds 42a and 42b are prepared from compound 38 according to Example 1, step 5.
• n-Propyl magnesium chloride (2.0 M in Et 2 O, 92 ⁇ L, 0.18 mmol) was added to a solution of aldehyde 30 (22.9 mg, 0.061 mmol) in THF (0.12 mL) at ⁇ 40° C. under nitrogen. After 1.75 h, the reaction was quenched with saturated aqueous NH 4 Cl (10 mL) and extracted with CH 2 Cl 2 (3 ⁇ 7 mL). Combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by preparative thin layer chromatography (5% MeOH/CH 2 Cl 2 ) afforded 13 mg (51%) of the desired ester.
• Compounds 43a and 43b are prepared from compound 39 according to Example 1, step 5.
• Compounds 44a and 44b are prepared from compound 40 according to Example 1, step 5.
• Dess-Martin periodinane (1.63 g, 3.83 mmol) was added to a solution of alcohol 45 (1.43 g, 3.48 mmol) in CH 2 Cl 2 (12 mL) at rt under nitrogen. After 1 h at rt the reaction was quenched with saturated aqueous NaHCO 3 and saturated aqueous NaHSO 3 (1:1, 100 mL). The mixture was extracted with CH 2 Cl 2 (3 ⁇ 150 mL). The combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica (2% MeOH/CH 2 Cl 2 ) afforded 915 mg (64%) of the desired aldehyde 46.
• the Tebbe reagent (0.5 M in THF, 4.86 mL, 2.43 mmol) was added to a solution of aldehyde 46 (677 mg, 1.65 mmol) in THF (11 mL) at ⁇ 40° C. under nitrogen. After 1 h at ⁇ 40° C. the reaction was quenched by addition of aqueous 2 N NaOH (1.65 mL) and stirred vigorously overnight with the addition of THF (15 mL). The mixture was filtered through celite, washing with excess EtOAc. The filtrate was concentrated in vacuo. Purification of the residue by flash column chromatography on silica (30% ⁇ 50% EtOAc/Hex) afforded 254 mg (38%) of the desired alkene 47.
• DDQ (58 mg, 0.26 mmol) was added to a mixture of 48 (130 mg, 0.23 mmol) in CH 2 Cl 2 (3.1 mL) and water (0.16 mL) at 0° C. under nitrogen. After 45 min, the reaction was quenched with saturated aqueous NaHCO 3 (40 mL). The mixture was extracted with EtOAc (3 ⁇ 30 mL). The combined extracts were washed with brine (25 mL) then dried (Na 2 SO 4 ), filtered and concentrated in vacuo.
• Compounds 52a and 52b are prepared from compound 51 according to Example 1, step 5.
• Compounds 55a and 55b are prepared from compound 54 according to Example 1, step 5.
• the two diastereomers (58, ⁇ 100 mg) were separated on a Waters 600 HPLC instrument employing a Waters 2996 PDA detector and a Whatman Partisil® 10 M20/50 column, 22 mm ⁇ 500 mm (Cat. No. 4232-220, Q.A. No. 3TA02D80).
• a flow rate of 15 mL/min Using 60% EtOAc/Hex as the eluent and a flow rate of 15 mL/min, the first diastereomer (59, 32.8 mg total isolated) eluted at 55-60 min, and the second diastereomer (60, 52.6 mg total isolated) eluted at 61-70 min.
• the two diastereomers (65, ⁇ 43 mg) were separated on a Waters 600 HPLC instrument employing a Waters 2996 PDA detector and a Whatman Partisil® 10 M20/50 column, 22 mm ⁇ 500 mm (Cat. No. 4232-220, Q.A. No. 3TA02D80).
• a flow rate of 15 mL/min Using 55% EtOAc/Hex as the eluent and a flow rate of 15 mL/min, the first diastereomer (66, 16 mg) eluted at 69-75 min, and the second diastereomer (67, 19 mg) eluted at 80-88 min.
• Step 3 Alkylation of 73 to Give 74
• DDQ (26 mg, 0.12 mmol) was added to a solution of 74 (65 mg, 0.11 mmol) in CH 2 Cl 2 (1.4 mL) and water (0.07 mL) at 0° C. under nitrogen. After 40 min, the reaction was quenched with saturated aqueous NaHCO 3 (20 mL) and extracted with EtOAc (3 ⁇ 20 mL). Combined extracts were washed with brine (15 mL) then dried (Na 2 SO 4 ), filtered and concentrated in vacuo.
• the two diastereomers (75, ⁇ 36 mg) were separated on a Waters 600 HPLC instrument employing a Waters 2996 PDA detector and a Whatman Partisil® 10 M20/50 column, 22 mm ⁇ 500 mm (Cat. No. 4232-220, Q.A. No. 3TA02D80).
• a flow rate of 15 mL/min the first diastereomer (76, 14.8 mg) eluted at 50-56.5 min
• the second diastereomer (77, 16.4 mg) eluted at 56.5-70 min.
• the Tebbe reagent (0.5 M in THF, 7.0 mL, 3.5 mmol) was added to a solution of aldehyde 82 (1.0 g, 2.36 mmol) in THF (16 mL) at ⁇ 40° C. under nitrogen. After 1 h at ⁇ 40° C. the reaction was quenched by addition of aqueous 2 N NaOH (5.25 mL) and stirred vigorously overnight with the addition of THF (20 mL). The mixture was filtered through celite, washing with excess EtOAc. The filtrate was concentrated in vacuo. Purification of the residue by flash column chromatography on silica (40% EtOAc/Hex) afforded 195 mg (20%) of the desired alkene 83.
• DDQ (78 mg, 0.34 mmol) was added to a mixture of 84 (180 mg, 0.31 mmol) in CH 2 Cl 2 (4.1 mL) and water (0.21 mL) at 0° C. under nitrogen. After 45 min at 0° C., the reaction was quenched with saturated aqueous NaHCO 3 (50 mL). The mixture was extracted with EtOAc (3 ⁇ 50 mL). The combined extracts were washed with brine (50 mL) then dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica (50% ⁇ 66% EtOAc/Hex, gradient) afforded 50 mg (35%) of the desired alcohol 85.
• the two diastereomers 86 ( ⁇ 34 mg) were separated on a Waters 600 HPLC instrument employing a Waters 2996 PDA detector and a Whatman Partisil® 10 M20/50 column, 22 mm ⁇ 500 mm (Cat. No. 4232-220, Q.A. No. 3TA02D80).
• a flow rate of 15 mL/min the first diastereomer (89, 10.7 mg) eluted at 78-87.5 min
• the second diastereomer (90, 7.0 mg) eluted at 91-101 min.
• Diisopropyl azodicarboxylate (DIAD, 194 ⁇ L, 1.0 mmol) was added to a solution of alcohol 45 (200 mg, 0.49 mmol), triphenylphosphine (191 mg, 0.73 mmol) and methyl 4-hydroxybenzoate (87 mg, 0.57 mmol) in CH 2 Cl 2 (2.5 mL). After stirring 18 h at rt, the solvent was removed under a stream of nitrogen and the residue was suspended in EtOAc (75 mL). The mixture was washed with saturated aqueous NaHCO 3 (3 ⁇ 25 mL) and brine (25 mL) then the organic phase was dried (Na 2 SO 4 ) filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (50% EtOAc/hexane ⁇ EtOAc, gradient) afforded 81 mg (31%) of the desired ether 95.
• DIAD Diisopropyl azodicarboxylate
• DDQ (37 mg, 0.16 mmol) was added to a mixture of 95 (81 mg, 0.15 mmol) in CH 2 Cl 2 (2.0 mL) and water (0.1 mL) at 0° C. under nitrogen. After 45 min at 0° C., the was quenched with saturated aqueous NaHCO 3 (25 mL). The mixture was extracted with EtOAc (3 ⁇ 25 mL). The combined extracts were washed with brine (25 mL) then dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica (85% EtOAc/Hex ⁇ EtOAc, gradient) afforded 31 mg (49%) of the desired alcohol 96.
• n-Pentyl magnesium bromide (2.0 M in THF, 27 mL, 54 mmol) was added to a solution of 4-bromobenzaldehyde (5.0 g, 27 mmol) in THF (20 mL) at 0° C. under nitrogen. After 1 h, the reaction was quenched with 3 N HCl and extracted with Et 2 O (3 ⁇ 120 mL). Combined extracts were washed with brine (100 mL), dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (5% EtOAc/Hex) afforded 5.1 g (74%) of 1-(4-bromophenyl)-hexan-1-ol.
• Acetyl chloride (6.9 mL, 96.6 mmol) was added to a solution of 5-bromo-2-thiophenecarboxylic acid (4.0 g, 19.3 mmol) in methanol (30 mL) at rt. After 17 h at rt, the reaction was heated at reflux for 1.5 h to drive it to completion. The reaction was then cooled to rt and concentrated in vacuo to remove methanol. Saturated aqueous NH 4 Cl (120 mL) was added and the mixture was extracted with CH 2 Cl 2 (3 ⁇ 100 mL). The combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo to afford 3.57 g (84%) of the desired methyl ester as an off white solid.
• n-Hexyl magnesium bromide (2.0 M in Et 2 O, 27 mL, 54 mmol) was added to a solution of 4-bromobenzaldehyde (5.0 g, 27 mmol) in THF (20 mL) at 0° C. under nitrogen. After 1.5 h at 0° C., the reaction was quenched slowly with 3 N HCl (20 mL) and concentrated in vacuo. The residue was diluted with water (30 mL) and extracted with Et 2 O (3 ⁇ 150 mL). Combined extracts were dried (Na 2 SO 4 ), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (5% ⁇ 10% EtOAc/Hex) afforded 5.6 g (76%) of 1-(4-bromophenyl)-heptan-1-ol.
• Exemplary, non-limiting examples of compounds useful according to the present disclosure include the following compounds.
• composition comprising a compound listed above, wherein said composition is a liquid which is ophthalmically acceptable.
• a medicament comprising a compound listed above, wherein said composition is a liquid which is ophthalmically acceptable.
• a method comprising administering a compound listed above to a mammal for the treatment of glaucoma or ocular hypertension.
• a method comprising administering a compound listed above to a mammal for the treatment of baldness.
• a kit comprising a composition comprising a compound listed above, a container, and instructions for administration of said composition to a mammal for the treatment of glaucoma or ocular hypertension.
• a kit comprising a composition comprising a compound listed above, a container, and instructions for administration of said composition to a mammal for the treatment of baldness.
• a “pharmaceutically acceptable salt” is any salt that retains the activity of the parent compound and does not impart any additional deleterious or untoward effects on the subject to which it is administered and in the context in which it is administered compared to the parent compound.
• a pharmaceutically acceptable salt also refers to any salt which may form in vivo as a result of administration of an acid, another salt, or a prodrug which is converted into an acid or salt.
• Pharmaceutically acceptable salts of acidic functional groups may be derived from organic or inorganic bases.
• the salt may comprise a mono or polyvalent ion.
• the inorganic ions lithium, sodium, potassium, calcium, and magnesium.
• Organic salts may be made with amines, particularly ammonium salts such as mono-, di- and trialkyl amines or ethanol amines. Salts may also be formed with caffeine, tromethamine and similar molecules.
• Hydrochloric acid or some other pharmaceutically acceptable acid may form a salt with a compound that includes a basic group, such as an amine or a pyridine ring.
• a “prodrug” is a compound which is converted to a therapeutically active compound after administration, and the term should be interpreted as broadly herein as is generally understood in the art. While not intending to limit the scope of the invention, conversion may occur by hydrolysis of an ester group or some other biologically labile group. Generally, but not necessarily, a prodrug is inactive or less active than the therapeutically active compound to which it is converted. Ester prodrugs of the compounds disclosed herein are specifically contemplated. An ester may be derived from a carboxylic acid of C1 (i.e.
• an ester may be derived from a carboxylic acid functional group on another part of the molecule, such as on a phenyl ring. While not intending to be limiting, an ester may be an alkyl ester, an aryl ester, or a heteroaryl ester.
• alkyl has the meaning generally understood by those skilled in the art and refers to linear, branched, or cyclic alkyl moieties.
• C 1-6 alkyl esters are particularly useful, where alkyl part of the ester has from 1 to 6 carbon atoms and includes, but is not limited to, methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, iso-butyl, t-butyl, pentyl isomers, hexyl isomers, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and combinations thereof having from 1-6 carbon atoms, etc.
• a drug to be administered systemically it may be confected as a powder, pill, tablet or the like, or as a solution, emulsion, suspension, aerosol, syrup or elixir suitable for oral or parenteral administration or inhalation.
• non-toxic solid carriers include, but are not limited to, pharmaceutical grades of mannitol, lactose, starch, magnesium stearate, sodium saccharin, the polyalkylene glycols, talcum, cellulose, glucose, sucrose and magnesium carbonate.
• the solid dosage forms may be uncoated or they may be coated by known techniques to delay disintegration and absorption in the gastrointestinal tract and thereby provide a sustained action over a longer period.
• a time delay material such as glyceryl monostearate or glyceryl distearate may be employed. They may also be coated by the technique described in the U.S. Pat. Nos.
• Liquid pharmaceutically administrable dosage forms can, for example, comprise a solution or suspension of one or more of the presently useful compounds and optional pharmaceutical adjutants in a carrier, such as for example, water, saline, aqueous dextrose, glycerol, ethanol and the like, to thereby form a solution or suspension.
• a carrier such as for example, water, saline, aqueous dextrose, glycerol, ethanol and the like, to thereby form a solution or suspension.
• the pharmaceutical composition to be administered may also contain minor amounts of nontoxic auxiliary substances such as wetting or emulsifying agents, pH buffering agents and the like.
• auxiliary agents are sodium acetate, sorbitan monolaurate, triethanolamine, sodium acetate, triethanolamine oleate, etc.
• Actual methods of preparing such dosage forms are known, or will be apparent, to those skilled in this art; for example, see Remington's Pharmaceutical Sciences, Mack Publishing Company, Easton, Pa., 16th Edition, 1980.
• the composition of the formulation to be administered, in any event contains a quantity of one or more of the presently useful compounds in an amount effective to provide the desired therapeutic effect.
• Parenteral administration is generally characterized by injection, either subcutaneously, intramuscularly or intravenously.
• Injectables can be prepared in conventional forms, either as liquid solutions or suspensions, solid forms suitable for solution or suspension in liquid prior to injection, or as emulsions. Suitable excipients are, for example, water, saline, dextrose, glycerol, ethanol and the like.
• the injectable pharmaceutical compositions to be administered may also contain minor amounts of non-toxic auxiliary substances such as wetting or emulsifying agents, pH buffering agents and the like.
• the amount of the presently useful compound or compounds administered is dependent on the therapeutic effect or effects desired, on the specific mammal being treated, on the severity and nature of the mammal's condition, on the manner of administration, on the potency and pharmacodynamics of the particular compound or compounds employed, and on the judgment of the prescribing physician.
• the therapeutically effective dosage of the presently useful compound or compounds may be in the range of about 0.5 or about 1 to about 100 mg/kg/day.
• a liquid which is ophthalmically acceptable is formulated such that it can be administered topically to the eye.
• the comfort should be maximized as much as possible, although sometimes formulation considerations (e.g. drug stability) may necessitate less than optimal comfort.
• the liquid should be formulated such that the liquid is tolerable to the patient for topical ophthalmic use.
• an ophthalmically acceptable liquid should either be packaged for single use, or contain a preservative to prevent contamination over multiple uses.
• solutions or medicaments are often prepared using a physiological saline solution as a major vehicle.
• Ophthalmic solutions should preferably be maintained at a comfortable pH with an appropriate buffer system.
• the formulations may also contain conventional, pharmaceutically acceptable preservatives, stabilizers and surfactants.
• Preservatives that may be used in the pharmaceutical compositions of the present invention include, but are not limited to, benzalkonium chloride, chlorobutanol, thimerosal, phenylmercuric acetate and phenylmercuric nitrate.
• a useful surfactant is, for example, Tween 80.
• various useful vehicles may be used in the ophthalmic preparations of the present invention. These vehicles include, but are not limited to, polyvinyl alcohol, povidone, hydroxypropyl methyl cellulose, poloxamers, carboxymethyl cellulose, hydroxyethyl cellulose and purified water.
• Tonicity adjustors may be added as needed or convenient. They include, but are not limited to, salts, particularly sodium chloride, potassium chloride, mannitol and glycerin, or any other suitable ophthalmically acceptable tonicity adjustor.
• buffers include acetate buffers, citrate buffers, phosphate buffers and borate buffers. Acids or bases may be used to adjust the pH of these formulations as needed.
• an ophthalmically acceptable antioxidant for use in the present invention includes, but is not limited to, sodium metabisulfite, sodium thiosulfate, acetylcysteine, butylated hydroxyanisole and butylated hydroxytoluene.
• excipient components which may be included in the ophthalmic preparations are chelating agents.
• a useful chelating agent is edetate disodium, although other chelating agents may also be used in place or in conjunction with it.
• the ingredients are usually used in the following amounts:
• Ingredient Amount (% w/v) active ingredient about 0.001-5 preservative 0-0.10 vehicle 0-40 tonicity adjustor 1-10 buffer 0.01-10 pH adjustor q.s. pH 4.5-7.5 antioxidant as needed surfactant as needed purified water as needed to make 100% Applications for Stimulating Hair Growth
• the compounds disclosed herein can be useful in the treatment of baldness and/or hair loss.
• Alopecia baldness
• baldness is a deficiency of either normal or abnormal hair, and is primarily a cosmetic problem in humans. It is a deficiency of terminal hair, the broad diameter, colored hair that is readily seen.
• vellus hair is a fine colorless hair which may require microscopic examination to determine its presence. This vellus hair is a precursor to terminal hair.
• the compounds described herein can be used to stimulate, such as the conversion of vellus hair to growth as terminal hair, as well as increasing the rate of growth of terminal hair.
• the utility of the compounds described herein for the simulation of hair growth was discovered as follows.
• the compounds described herein are prostaglandin analogues and therefore have similar activities as bimatoprost, contain structural similarities, and therefore are expected to stimulate hair growth and stimulation of the conversion of vellus hair to terminal hair.
• the compounds described herein and their prodrugs can be used for the stimulation of hair growth.
• hair growth includes hair associated with the scalp, eyebrows, eyelids, beard, and other areas of the skin of animals.
• the compound is mixed with a dermatologically compatible vehicle or carrier.
• vehicle which may be employed for preparing compositions as described herein, may comprise, for example, aqueous solutions such as e.g., physiological salines, oil solutions, or ointments.
• vehicle furthermore may contain dermatologically compatible preservatives such as e.g., benzalkonium chloride, surfactants like e.g., polysorbate 80, liposomes or polymers, for example, methyl cellulose, polyvinyl alcohol, polyvinyl pyrrolidone and hyaluronic acid; these may be used for increasing the viscosity.
• soluble or insoluble drug inserts when the drug is to be administered.
• dermatological compositions can be formulated for topical treatment for the stimulation of hair growth which comprises an effective hair growth simulating amount of one or more compounds as defined above and a dermatologically compatible carrier.
• Effective amounts of the active compounds may be determined by one of ordinary skill in the art, but will vary depending on the compound employed, frequency of application and desired result.
• the compound will generally range from about 0.0000001 to about 50% by weight of the dermatological composition.
• the compound will range from about 0.001 to about 50% by weight of total dermatological composition, more preferably from about 0.1 to about 30% by weight of the composition.
• the application of the present compounds for stimulation of hair growth finds applications in mammalian species, including both humans and animals.
• the compounds described herein can be applied for example, to the scalp, face beard, head, pubic area, upper lip, eyebrows, and eyelids.
• animal raised for their pelts, e.g., mink the compounds described herein can be applied over the entire surface of the body to improve the overall pelt for commercial reasons.
• the process can also be used for cosmetic reasons in animals, e.g., applied to the skin of dogs and cats having bald patches due to mange or other diseases causing a degree of alopecia.
• compositions contemplated for the stimulation of hair growth include pharmaceutical compositions suited for topical and local action.
• topical as employed herein relates to the use of a compound, as described herein, incorporated in a suitable pharmaceutical carrier, and applied at the site of thinning hair or baldness for exertion of local action.
• topical compositions include those pharmaceutical forms in which the compound is applied externally by direct contact with the skin to be treated.
• Conventional pharmaceutical forms for this purpose include ointments, liniments, creams, shampoos, lotions, pastes, jellies, sprays, aerosols, and the like, and may be applied in patches or impregnated dressings depending on the part of the body to be treated.
• cream embraces formulations (including creams) having oleaginous, water-soluble and emulsion-type bases, e.g., petrolatum, lanolin, polyethylene glycols, as well as mixtures of these.
• oleaginous, water-soluble and emulsion-type bases e.g., petrolatum, lanolin, polyethylene glycols, as well as mixtures of these.
• the compounds can be applied repeatedly for the sustained period of time topically on the part of the body to be treated, for example, the eyelids, eyebrows, skin or scalp.
• the preferred dosage regimen will generally involve regular, such as daily, administration for a period of treatment of at least one month, more preferably at least three months, and most preferably, at least six months.
• the active compounds can be formulated in aqueous solutions, creams, ointments, or oils exhibiting physologicla acceptable osmolarity by addition of pharmaceutically acceptable buffers and salts such formulations may or may not, depending on the dispenser, contain preservatives such as benzalkonium chloride, chlorhexidine, chlorobutanol, parahydroxybenzoic acids and phenylmercuric salts such as nitrate, chloride, acetate, and borate, or antioxidants, as well as additives like EDTA, sorbitol, boric acid and the like as additives.
• preservatives such as benzalkonium chloride, chlorhexidine, chlorobutanol, parahydroxybenzoic acids and phenylmercuric salts such as nitrate, chloride, acetate, and borate, or antioxidants, as well as additives like EDTA, sorbitol, boric acid and the like as additives.
• aqueous solutions may contain viscosity increasing agents such as polysaccharides, e.g., methylcellulose, mucopolysaccharides, e.g., hyaluronic acid and chondroitin sulfate, or poly alcohol, e.g., polyvinylalcohol.
• viscosity increasing agents such as polysaccharides, e.g., methylcellulose, mucopolysaccharides, e.g., hyaluronic acid and chondroitin sulfate, or poly alcohol, e.g., polyvinylalcohol.
• Various slow releasing gels and matricies may also be employed as well as soluble and insoluble ocular inserts, for instance, based on substances forming in situ gels.
• various amounts of the drug and different dose regimens may be employed.
• the daily amount of compound for treatment of the eyelid may be about 0.1 ng to about 100 mg per eyelid.
• the compound can be advantageously formulated using ointments, creams, liniments or patches as a carrier of the active ingredient.
• these formulations may or may not contain preservatives, depending on the dispenser and nature of use.
• preservatives include those mentioned above, and methyl-, propyl-, or butyl-parahydroxybenzoic acid, betain, chlorhexidine, benzalkonium chloride, and the like.
• matricies for the slow release delivery may also be used.
• the dose to be applied on the scalp is in the range of about 0.1 ng to about 100 mg per day, more preferably about 1 ng to about 10 mg per day, and most preferably about 10 ng to about 1 mg per day depending on the compound and the formulation.
• the compound may be administered once or several times daily with or without antioxidants.
• Topical formulations may generally be comprised of a pharmaceutical carrier, cosolvent, emulsifier, penetration enhancer, preservative system, and emollient.
• the actual dose of the active compounds of the present invention depends on the specific compound, and on the condition to be treated; the selection of the appropriate dose is well within the knowledge of the skilled artisan.
• the compounds disclosed herein are also useful in combination with other drugs useful for the treatment of glaucoma or other conditions.
• these compounds can be administered topically, periocularly, intraocularly, or by any other effective means known in the art.
• prostaglandin EP 2 selective agonists are believed to have several medical uses.
• U.S. Pat. No. 6,437,146 teaches the use of prostaglandin EP 2 selective agonists “for treating or preventing inflammation and pain in joint and muscle (e.g., rheumatoid arthritis, rheumatoid spondylitis, osteoarthritis, gouty arthritis, juvenile arthritis, etc.), inflammatory skin condition (e.g., sunburn, burns, eczema, dermatitis, etc.), inflammatory eye condition (e.g., conjunctivitis, etc.), lung disorder in which inflammation is involved (e.g., asthma, bronchitis, pigeon fancier's disease, farmer's lung, etc.), condition of the gastrointestinal tract associated with inflammation (e.g., aphthous ulcer, Chrohn's disease, atrophic gastritis, gastritis varial
• U.S. Pat. No. 6,710,072 teaches the use of EP2 agonists for the treatment or prevention of “osteoporosis, constipation, renal disorders, sexual dysfunction, baldness, diabetes, cancer and in disorder of immune regulation . . . various pathophysiological diseases including acute myocardial infarction, vascular thrombosis, hypertension, pulmonary hypertension, ischemic heart disease, congestive heart failure, and angina pectoris.”
• These compounds can also be used to treat or prevent conditions affecting the posterior part of the eye including maculopathies/retinal degeneration such as non-exudative age related macular degeneration (ARMD), exudative age related macular degeneration (ARMD), choroidal neovascularization, diabetic retinopathy, acute macular neuroretinopathy, central serous chorioretinopathy, cystoid macular edema, and diabetic macular edema; uveitis/retinitis/choroiditis such as acute multifocal placoid pigment epitheliopathy, Behcet's disease, birdshot retinochoroidopathy, infectious (syphilis, lyme, tuberculosis, toxoplasmosis), intermediate uveitis (pars planitis), multifocal choroiditis, multiple evanescent white dot syndrome (mewds), ocular sarcoidosis, posterior scleritis, serpiginous cho
• the disease or condition is retinitis pigmentosa, proliferative vitreal retinopathy (PVR), age-related macular degeneration (ARMD), diabetic retinopathy, diabetic macular edema, retinal detachment, retinal tear, uveitus, or cytomegalovirus retinitis.
• PVR proliferative vitreal retinopathy
• ARMD age-related macular degeneration
• diabetic retinopathy diabetic macular edema
• retinal detachment retinal tear, uveitus
• cytomegalovirus retinitis cytomegalovirus retinitis
• These compounds are also useful in treating asthma.

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